/Engine/Source/Runtime/Engine/Classes/SparseVolumeTexture/SparseVolumeTexture.h
OverrideAppendFrame()to ensure that there is never more than a single frame in a static SVT.
virtual bool AppendFrame ( [UE::SVT::FTextureData](API\Runtime\Engine\SparseVolumeTexture\FTextureData) & UncookedFrame )